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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-13 16:28:32 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-13 16:28:32 -0400
commit0b381a286e5d748b1fd80095d3dd52326819742f (patch)
treed72fca56123520b9c78661137f8a02b6ad26f95b /include/linux/blktrace_api.h
parent034b5eeb6bc783e7f60e11299154556e65699e7a (diff)
parent5921e6f8809b1616932ca4afd40fe449faa8fd88 (diff)
Merge tag 'disintegrate-main-20121013' of git://git.infradead.org/users/dhowells/linux-headers
Pull UAPI disintegration for include/linux/{,byteorder/}*.h from David Howells: "The patches contained herein do the following: (1) Remove kernel-only stuff in linux/ppp-comp.h from the UAPI. I checked this with Paul Mackerras before I created the patch and he suggested some extra bits to unexport. (2) Remove linux/blk_types.h entirely from the UAPI as none of it is userspace applicable, and remove from the UAPI that part of linux/fs.h that was the reason for linux/blk_types.h being exported in the first place. I discussed this with Jens Axboe before creating the patch. (3) The big patch of the series to disintegrate include/linux/*.h as a unit. This could be split up, though there would be collisions in moving stuff between the two Kbuild files when the parts are merged as that file is sorted alphabetically rather than being grouped by subsystem. Of this set of headers, 17 files have changed in the UAPI exported region since the 4th and only 8 since the 9th so there isn't much change in this area - as one might expect. It should be pretty obvious and straightforward if it does come to fixing up: stuff in __KERNEL__ guards stays where it is and stuff outside moves to the same file in the include/uapi/linux/ directory. If a new file appears then things get a bit more complicated as the "headers +=" line has to move to include/uapi/linux/Kbuild. Only one new file has appeared since the 9th and I judge this type of event relatively unlikely. (4) A patch to disintegrate include/linux/byteorder/*.h as a unit. Signed-off-by: David Howells <dhowells@redhat.com>" * tag 'disintegrate-main-20121013' of git://git.infradead.org/users/dhowells/linux-headers: UAPI: (Scripted) Disintegrate include/linux/byteorder UAPI: (Scripted) Disintegrate include/linux UAPI: Unexport linux/blk_types.h UAPI: Unexport part of linux/ppp-comp.h
Diffstat (limited to 'include/linux/blktrace_api.h')
-rw-r--r--include/linux/blktrace_api.h142
1 files changed, 1 insertions, 141 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 4d1a0748eaf8..7c2e030e72f1 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -1,150 +1,11 @@
1#ifndef BLKTRACE_H 1#ifndef BLKTRACE_H
2#define BLKTRACE_H 2#define BLKTRACE_H
3 3
4#include <linux/types.h>
5#ifdef __KERNEL__
6#include <linux/blkdev.h> 4#include <linux/blkdev.h>
7#include <linux/relay.h> 5#include <linux/relay.h>
8#include <linux/compat.h> 6#include <linux/compat.h>
9#endif 7#include <uapi/linux/blktrace_api.h>
10
11/*
12 * Trace categories
13 */
14enum blktrace_cat {
15 BLK_TC_READ = 1 << 0, /* reads */
16 BLK_TC_WRITE = 1 << 1, /* writes */
17 BLK_TC_FLUSH = 1 << 2, /* flush */
18 BLK_TC_SYNC = 1 << 3, /* sync IO */
19 BLK_TC_SYNCIO = BLK_TC_SYNC,
20 BLK_TC_QUEUE = 1 << 4, /* queueing/merging */
21 BLK_TC_REQUEUE = 1 << 5, /* requeueing */
22 BLK_TC_ISSUE = 1 << 6, /* issue */
23 BLK_TC_COMPLETE = 1 << 7, /* completions */
24 BLK_TC_FS = 1 << 8, /* fs requests */
25 BLK_TC_PC = 1 << 9, /* pc requests */
26 BLK_TC_NOTIFY = 1 << 10, /* special message */
27 BLK_TC_AHEAD = 1 << 11, /* readahead */
28 BLK_TC_META = 1 << 12, /* metadata */
29 BLK_TC_DISCARD = 1 << 13, /* discard requests */
30 BLK_TC_DRV_DATA = 1 << 14, /* binary per-driver data */
31 BLK_TC_FUA = 1 << 15, /* fua requests */
32
33 BLK_TC_END = 1 << 15, /* we've run out of bits! */
34};
35
36#define BLK_TC_SHIFT (16)
37#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
38
39/*
40 * Basic trace actions
41 */
42enum blktrace_act {
43 __BLK_TA_QUEUE = 1, /* queued */
44 __BLK_TA_BACKMERGE, /* back merged to existing rq */
45 __BLK_TA_FRONTMERGE, /* front merge to existing rq */
46 __BLK_TA_GETRQ, /* allocated new request */
47 __BLK_TA_SLEEPRQ, /* sleeping on rq allocation */
48 __BLK_TA_REQUEUE, /* request requeued */
49 __BLK_TA_ISSUE, /* sent to driver */
50 __BLK_TA_COMPLETE, /* completed by driver */
51 __BLK_TA_PLUG, /* queue was plugged */
52 __BLK_TA_UNPLUG_IO, /* queue was unplugged by io */
53 __BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */
54 __BLK_TA_INSERT, /* insert request */
55 __BLK_TA_SPLIT, /* bio was split */
56 __BLK_TA_BOUNCE, /* bio was bounced */
57 __BLK_TA_REMAP, /* bio was remapped */
58 __BLK_TA_ABORT, /* request aborted */
59 __BLK_TA_DRV_DATA, /* driver-specific binary data */
60};
61
62/*
63 * Notify events.
64 */
65enum blktrace_notify {
66 __BLK_TN_PROCESS = 0, /* establish pid/name mapping */
67 __BLK_TN_TIMESTAMP, /* include system clock */
68 __BLK_TN_MESSAGE, /* Character string message */
69};
70
71
72/*
73 * Trace actions in full. Additionally, read or write is masked
74 */
75#define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
76#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
77#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
78#define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
79#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
80#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
81#define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
82#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
83#define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
84#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
85#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
86#define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
87#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
88#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
89#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
90#define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE))
91#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA))
92
93#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
94#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
95#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY))
96
97#define BLK_IO_TRACE_MAGIC 0x65617400
98#define BLK_IO_TRACE_VERSION 0x07
99
100/*
101 * The trace itself
102 */
103struct blk_io_trace {
104 __u32 magic; /* MAGIC << 8 | version */
105 __u32 sequence; /* event number */
106 __u64 time; /* in microseconds */
107 __u64 sector; /* disk offset */
108 __u32 bytes; /* transfer length */
109 __u32 action; /* what happened */
110 __u32 pid; /* who did it */
111 __u32 device; /* device number */
112 __u32 cpu; /* on what cpu did it happen */
113 __u16 error; /* completion error */
114 __u16 pdu_len; /* length of data after this trace */
115};
116
117/*
118 * The remap event
119 */
120struct blk_io_trace_remap {
121 __be32 device_from;
122 __be32 device_to;
123 __be64 sector_from;
124};
125
126enum {
127 Blktrace_setup = 1,
128 Blktrace_running,
129 Blktrace_stopped,
130};
131
132#define BLKTRACE_BDEV_SIZE 32
133
134/*
135 * User setup structure passed with BLKTRACESTART
136 */
137struct blk_user_trace_setup {
138 char name[BLKTRACE_BDEV_SIZE]; /* output */
139 __u16 act_mask; /* input */
140 __u32 buf_size; /* input */
141 __u32 buf_nr; /* input */
142 __u64 start_lba;
143 __u64 end_lba;
144 __u32 pid;
145};
146 8
147#ifdef __KERNEL__
148#if defined(CONFIG_BLK_DEV_IO_TRACE) 9#if defined(CONFIG_BLK_DEV_IO_TRACE)
149 10
150#include <linux/sysfs.h> 11#include <linux/sysfs.h>
@@ -250,5 +111,4 @@ extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
250 111
251#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */ 112#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
252 113
253#endif /* __KERNEL__ */
254#endif 114#endif